if (mtDropDown.isSupported()) {

		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);

		var menu1 = ms.addMenu(document.getElementById("menu1"));
	
		
//第二菜单
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		
		// menu : 3
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- 车型展示", "Product.asp");
		menu3.addItem("- 车型分类", "Products.asp");
	    menu3.addItem("- 车型搜索", "search.asp");
		
	
		
		// menu : 5
		var menu5 = ms.addMenu(document.getElementById("menu5"));


		// menu : 6
		var menu6 = ms.addMenu(document.getElementById("menu6"));
		
		// menu : 7
		var menu7 = ms.addMenu(document.getElementById("menu7"));	
	
		mtDropDown.renderAll();
	}